Swede Midge (Contarinia nasturtii Keiffer) Phenology and Management in Minnesota Community Gardens
Swede midge is a major insect pest of brassicas, including broccoli (Brassica oleracea L. var. italica), cauliflower (B. oleracea L. var. botrytis), collards (B. oleracea L. var. viridis), and kale (B. oleracea var. sabellica). The insect infests and feeds on the growing tips of plants, resulting in...
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American Society for Horticultural Science (ASHS)
2025-01-01
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| Series: | HortScience |
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| Online Access: | https://journals.ashs.org/hortsci/view/journals/hortsci/60/3/article-p273.xml |
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| author | Cindy Tong Eric Burkness Jonathan Dregni Mary Rogers Angie Ambourn Jonathan Osthus |
| author_facet | Cindy Tong Eric Burkness Jonathan Dregni Mary Rogers Angie Ambourn Jonathan Osthus |
| author_sort | Cindy Tong |
| collection | DOAJ |
| description | Swede midge is a major insect pest of brassicas, including broccoli (Brassica oleracea L. var. italica), cauliflower (B. oleracea L. var. botrytis), collards (B. oleracea L. var. viridis), and kale (B. oleracea var. sabellica). The insect infests and feeds on the growing tips of plants, resulting in distorted leaves or lack of heading of broccoli and cauliflower. Since 2014, when continuous trapping began in Minnesota, USA, it has primarily been found in community gardens in the Twin Cities metropolitan area. Trapping data obtained at Saint Paul community gardens over 3 years indicated that swede midge phenology in any particular garden varied from year to year. Gardeners surveyed in 2023 indicated some knowledge of swede midge, were unsure of how to recognize infestation symptoms, and were interested in collaborating to test management methods. A simple mitigation system using bamboo poles, polypropylene fabric, and weed barrier was tested for its ability to reduce infestations by blocking access to plants by adults and to soil by larvae and prevent emergence by previously pupating generations. It was 50% to 80% effective compared with unprotected controls. |
| format | Article |
| id | doaj-art-2fd40f4ce6e946a08064a63c6c5b8a34 |
| institution | Kabale University |
| issn | 2327-9834 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | American Society for Horticultural Science (ASHS) |
| record_format | Article |
| series | HortScience |
| spelling | doaj-art-2fd40f4ce6e946a08064a63c6c5b8a342025-02-06T16:53:55ZengAmerican Society for Horticultural Science (ASHS)HortScience2327-98342025-01-01603https://doi.org/10.21273/HORTSCI18349-24Swede Midge (Contarinia nasturtii Keiffer) Phenology and Management in Minnesota Community GardensCindy Tong0Eric Burkness1Jonathan Dregni2Mary Rogers3Angie Ambourn4Jonathan Osthus5Department of Horticultural Science, University of MinnesotaDepartment of Horticultural Science, University of MinnesotaDepartment of Horticultural Science, University of MinnesotaDepartment of Horticultural Science, University of MinnesotaPlant Protection Division, Minnesota Department of AgriculturePlant Protection Division, Minnesota Department of AgricultureSwede midge is a major insect pest of brassicas, including broccoli (Brassica oleracea L. var. italica), cauliflower (B. oleracea L. var. botrytis), collards (B. oleracea L. var. viridis), and kale (B. oleracea var. sabellica). The insect infests and feeds on the growing tips of plants, resulting in distorted leaves or lack of heading of broccoli and cauliflower. Since 2014, when continuous trapping began in Minnesota, USA, it has primarily been found in community gardens in the Twin Cities metropolitan area. Trapping data obtained at Saint Paul community gardens over 3 years indicated that swede midge phenology in any particular garden varied from year to year. Gardeners surveyed in 2023 indicated some knowledge of swede midge, were unsure of how to recognize infestation symptoms, and were interested in collaborating to test management methods. A simple mitigation system using bamboo poles, polypropylene fabric, and weed barrier was tested for its ability to reduce infestations by blocking access to plants by adults and to soil by larvae and prevent emergence by previously pupating generations. It was 50% to 80% effective compared with unprotected controls.https://journals.ashs.org/hortsci/view/journals/hortsci/60/3/article-p273.xmlbrassicasbroccoligardener surveypolypropylene fabricweed barrier |
| spellingShingle | Cindy Tong Eric Burkness Jonathan Dregni Mary Rogers Angie Ambourn Jonathan Osthus Swede Midge (Contarinia nasturtii Keiffer) Phenology and Management in Minnesota Community Gardens HortScience brassicas broccoli gardener survey polypropylene fabric weed barrier |
| title | Swede Midge (Contarinia nasturtii Keiffer) Phenology and Management in Minnesota Community Gardens |
| title_full | Swede Midge (Contarinia nasturtii Keiffer) Phenology and Management in Minnesota Community Gardens |
| title_fullStr | Swede Midge (Contarinia nasturtii Keiffer) Phenology and Management in Minnesota Community Gardens |
| title_full_unstemmed | Swede Midge (Contarinia nasturtii Keiffer) Phenology and Management in Minnesota Community Gardens |
| title_short | Swede Midge (Contarinia nasturtii Keiffer) Phenology and Management in Minnesota Community Gardens |
| title_sort | swede midge contarinia nasturtii keiffer phenology and management in minnesota community gardens |
| topic | brassicas broccoli gardener survey polypropylene fabric weed barrier |
| url | https://journals.ashs.org/hortsci/view/journals/hortsci/60/3/article-p273.xml |
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